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Experimental Investigation on Fatigue Crack Propagation in Surface-Hardened Layer of High-Speed Train Axles

This study examines fatigue crack growth behavior in induction-hardened S38C axle steel with a gradient microstructure. High-frequency three-point bending fatigue tests were conducted to evaluate crack growth rates (d<i>a</i>/d<i>N</i>) across three depth-defined regions: a hardened layer, a heterog...

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Principais autores: Chun Gao, Zhengwei Yu, Yuanyuan Zhang, Tao Fan, Bo Zhang, Huajian Song, Hang Su
Format: Artigo
Sprog:Inglês
Udgivet: MDPI AG 2025-07-01
Serier:Crystals
Fag:
fatigue crack propagation
three-point bending
crack measurement
fractography
high-speed train axle
surface hardening
Online adgang:https://www.mdpi.com/2073-4352/15/7/638
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